11 meter 27 MHz Frequency Data Link / Paging System Locations 26-28 MHz

[R4002]

So I noticed that in addition to Highland Falls, NY 27.255 MHz FSK network, there are at least two other KiwiSDRs that have FSK data burst networks local to them.  The signals on these are identical to the signals noted on the Highland Falls, NY KiwiSDR (WB2EEE).

*N1NTE-1 Holland, MA (grid FN32) 42.032759 N, 72139970 W - 27.255 MHz - strong to fair to weak FSK data bursts, same format as the other receivers, much wider range of signal strengths, possibly indicating multiple systems with coverage overlapping this receiver's RX range capability

*WA2ZKD/1 Rockport, Maine (grid FN54le) 44.175034 N, 69.079214 W - 27.255 MHz - strong FSK bursts

*N2LAW Brookline, New Hampshire (grid FN42dr) 42.711372 N, 71.669474 W - 27.255 MHz - strong to fair FSK bursts, same format as the Highland Falls, NY and Rockport Maine KiwiSDRs.

Rockport, Maine and Brookline, New Hampshire are about 175 miles straightline distance from each other...and, as I'm typing this, the band appears to be almost entirely closed at those locations so the presumption is that the 27255 systems are within a 10-20 mile radius of the receiver locations.

There are a lot of receivers to look through...I am currently on another KiwiSDR in Jumonville, PA and 27255 is clear except for local AM CB chatter.  I am noticing a fair amount of out of band 11 meter activity, especially on 27505 AM, 27510 USB, 27535 AM, 27555 USB, 27560 USB, 27615 AM and 27630 USB but given the lack of any other activity on the band I would venture that the activity I'm hearing is somewhat local (unless the band is starting to wake up at 20:25 UTC - 20:30 UTC.

Maybe the band is starting to wake up after all.  Numerous new signals popping up in the legal 40 CB band 26965-27405 (the Usual Suspects, 27025 AM, 27085 AM, 27265 AM and 27285 AM active) and several additional active frequencies in the 27410-28000 range showing up on the Jumonville PA KiwiSDR.  27445 LSB, 27455 USB and some others.  27255 now has a strong AM QSO going on it, no sign of the familiar FSK bursts though.

I will continue to check SDRs in my free time and update this list accordingly.  Consider it a work in progress to see how many of these systems on 27255 (and the other Part 95 RC frequencies - 26.995, 27.045, 27.095, 27.145 and 27.195) are local to these KiwiSDRs.

*Izhevsk city Izhevsk, Russia | Grid LO66ou:  26.945 MHz and 26.960 MHz - near-constant FSK paging or data burst datalink system



*List:

-WB2EEE Highland Falls, NY - 27255 27.255 MHz FSK - local FSK data link
-N1NTE-1 Holland, MA (grid FN32) 42.032759 N, 72139970 W - 27255 27.255 MHz FSK - local/semi-local FSK data link(s)
-WA2ZKD/1 Rockport, ME (grid FN54le) 44.175034 N, 69.079214 W - 27255 27.255 MHz FSK - local FSK data link
-N2LAW Brookline, NH (grid FN42dr) 42.711372 N, 71.669474 W - 27255 27.255 MHz FSK - local FSK data link
-Izhevsk, Russia (grid LO66ou) - 26945 26.945 MHz FSK - local FSK data link, different format compared to the "standard"
-Izhevsk, Russia (grid LO66ou) - 26960 26.960 MHz FSK - local FSK data link, different format compared to the "standard"